body {
    background: #2E243F;
    background-image: url('1.png');
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
}

.img {
    position:absolute;
    max-width:45%;
    max-height:45%;
    top:50%;
    left:50%;
    overflow:visible;
}

.log {
    position:relative;
    max-width:100%;
    max-height:100%;
    margin-top:-50%;
    margin-left:-50%;
}